Direct single well measurement of groundwater flux in permafrost-impacted aquifers in Nunavik, Canada
Permafrost dynamics in high latitude territories is a complex process resulting from atmospheric, soil, water and vegetation interaction. Advective heat transport by groundwater has been identified as potentially playing a significant role in permafrost dynamics. However, there is a lack of direct m...
Main Authors: | , , , , , , |
---|---|
Other Authors: | |
Format: | Conference Object |
Language: | English |
Published: |
2018
|
Subjects: | |
Online Access: | https://orbi.uliege.be/handle/2268/228018 https://orbi.uliege.be/bitstream/2268/228018/1/Abstract%20FVPDM%20Nunavik.pdf |
id |
ftorbi:oai:orbi.ulg.ac.be:2268/228018 |
---|---|
record_format |
openpolar |
spelling |
ftorbi:oai:orbi.ulg.ac.be:2268/228018 2024-04-21T08:10:04+00:00 Direct single well measurement of groundwater flux in permafrost-impacted aquifers in Nunavik, Canada Jamin, Pierre Cochand, Marion Dagenais, Sophie Fortier, Richard Molson, John Brouyère, Serge Lemieux, Jean-Michel UEE - Urban and Environmental Engineering - ULiège 2018-09-10 https://orbi.uliege.be/handle/2268/228018 https://orbi.uliege.be/bitstream/2268/228018/1/Abstract%20FVPDM%20Nunavik.pdf en eng https://orbi.uliege.be/handle/2268/228018 info:hdl:2268/228018 https://orbi.uliege.be/bitstream/2268/228018/1/Abstract%20FVPDM%20Nunavik.pdf open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess IAH 2018, Daejeon, South Korea [KR], 09-14 septembre 2018 finite volume point dilution method permafrost single-well tracer test groundwater flow measurement Nunavik Physical chemical mathematical & earth Sciences Earth sciences & physical geography Engineering computing & technology Geological petroleum & mining engineering Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Ingénierie informatique & technologie Géologie ingénierie du pétrole & des mines conference poster not in proceedings http://purl.org/coar/resource_type/c_18co info:eu-repo/semantics/conferencePoster 2018 ftorbi 2024-03-27T14:48:57Z Permafrost dynamics in high latitude territories is a complex process resulting from atmospheric, soil, water and vegetation interaction. Advective heat transport by groundwater has been identified as potentially playing a significant role in permafrost dynamics. However, there is a lack of direct measurements of groundwater parameters such as hydraulic head and hydraulic conductivity for determining flow patterns and groundwater fluxes in permafrost environments due to difficulties in accessing these remote territories and associated high costs of field work in such remote areas. Existing monitoring wells are often insufficient to allow the assessment of representative hydraulic gradients and realistic groundwater flow rates. Here, the Finite Volume Point Dilution Method (FVPDM) is applied to measure in-situ groundwater fluxes in a supra- and sub-permafrost sandy aquifer within a small watershed in Umiujaq, Nunavik, Canada. The advantage of the FVPDM method is to provide direct measurement of groundwater flux using a single well technique. The tests show that this method can be successfully applied in remote conditions and with limited resources. Darcy fluxes derived from the FVPDM tests varied from 0.577 to 0.840 m/d, implying that advective heat transport from groundwater flow could be contributing to permafrost thaw at this site. These data are important since very few estimates of groundwater fluxes are available in the discontinuous permafrost zone and that such a significant groundwater flux can have a major impact on heat exchange between groundwater and permafrost. Moreover, they are essential for building and calibrating realistic groundwater flow and heat transport models required for better understand permafrost dynamics and sustainable groundwater management in cold environments. Conference Object permafrost Umiujaq Nunavik University of Liège: ORBi (Open Repository and Bibliography) |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
finite volume point dilution method permafrost single-well tracer test groundwater flow measurement Nunavik Physical chemical mathematical & earth Sciences Earth sciences & physical geography Engineering computing & technology Geological petroleum & mining engineering Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Ingénierie informatique & technologie Géologie ingénierie du pétrole & des mines |
spellingShingle |
finite volume point dilution method permafrost single-well tracer test groundwater flow measurement Nunavik Physical chemical mathematical & earth Sciences Earth sciences & physical geography Engineering computing & technology Geological petroleum & mining engineering Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Ingénierie informatique & technologie Géologie ingénierie du pétrole & des mines Jamin, Pierre Cochand, Marion Dagenais, Sophie Fortier, Richard Molson, John Brouyère, Serge Lemieux, Jean-Michel Direct single well measurement of groundwater flux in permafrost-impacted aquifers in Nunavik, Canada |
topic_facet |
finite volume point dilution method permafrost single-well tracer test groundwater flow measurement Nunavik Physical chemical mathematical & earth Sciences Earth sciences & physical geography Engineering computing & technology Geological petroleum & mining engineering Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Ingénierie informatique & technologie Géologie ingénierie du pétrole & des mines |
description |
Permafrost dynamics in high latitude territories is a complex process resulting from atmospheric, soil, water and vegetation interaction. Advective heat transport by groundwater has been identified as potentially playing a significant role in permafrost dynamics. However, there is a lack of direct measurements of groundwater parameters such as hydraulic head and hydraulic conductivity for determining flow patterns and groundwater fluxes in permafrost environments due to difficulties in accessing these remote territories and associated high costs of field work in such remote areas. Existing monitoring wells are often insufficient to allow the assessment of representative hydraulic gradients and realistic groundwater flow rates. Here, the Finite Volume Point Dilution Method (FVPDM) is applied to measure in-situ groundwater fluxes in a supra- and sub-permafrost sandy aquifer within a small watershed in Umiujaq, Nunavik, Canada. The advantage of the FVPDM method is to provide direct measurement of groundwater flux using a single well technique. The tests show that this method can be successfully applied in remote conditions and with limited resources. Darcy fluxes derived from the FVPDM tests varied from 0.577 to 0.840 m/d, implying that advective heat transport from groundwater flow could be contributing to permafrost thaw at this site. These data are important since very few estimates of groundwater fluxes are available in the discontinuous permafrost zone and that such a significant groundwater flux can have a major impact on heat exchange between groundwater and permafrost. Moreover, they are essential for building and calibrating realistic groundwater flow and heat transport models required for better understand permafrost dynamics and sustainable groundwater management in cold environments. |
author2 |
UEE - Urban and Environmental Engineering - ULiège |
format |
Conference Object |
author |
Jamin, Pierre Cochand, Marion Dagenais, Sophie Fortier, Richard Molson, John Brouyère, Serge Lemieux, Jean-Michel |
author_facet |
Jamin, Pierre Cochand, Marion Dagenais, Sophie Fortier, Richard Molson, John Brouyère, Serge Lemieux, Jean-Michel |
author_sort |
Jamin, Pierre |
title |
Direct single well measurement of groundwater flux in permafrost-impacted aquifers in Nunavik, Canada |
title_short |
Direct single well measurement of groundwater flux in permafrost-impacted aquifers in Nunavik, Canada |
title_full |
Direct single well measurement of groundwater flux in permafrost-impacted aquifers in Nunavik, Canada |
title_fullStr |
Direct single well measurement of groundwater flux in permafrost-impacted aquifers in Nunavik, Canada |
title_full_unstemmed |
Direct single well measurement of groundwater flux in permafrost-impacted aquifers in Nunavik, Canada |
title_sort |
direct single well measurement of groundwater flux in permafrost-impacted aquifers in nunavik, canada |
publishDate |
2018 |
url |
https://orbi.uliege.be/handle/2268/228018 https://orbi.uliege.be/bitstream/2268/228018/1/Abstract%20FVPDM%20Nunavik.pdf |
genre |
permafrost Umiujaq Nunavik |
genre_facet |
permafrost Umiujaq Nunavik |
op_source |
IAH 2018, Daejeon, South Korea [KR], 09-14 septembre 2018 |
op_relation |
https://orbi.uliege.be/handle/2268/228018 info:hdl:2268/228018 https://orbi.uliege.be/bitstream/2268/228018/1/Abstract%20FVPDM%20Nunavik.pdf |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
_version_ |
1796951377166991360 |